SK Telecom tests LTE-A 5-Band CA on commercial network

Nieuws Mobiel Korea, republiek van 27 FEB 2017
SK Telecom tests LTE-A 5-Band CA on commercial network

South Korean operator SK Telecom has successfully tested LTE-Advanced (LTE-A) five-band carrier aggregation (CA) on its commercial network. SK Telecom's bandwidth resources included 10MHz in the 800MHz band, 20MHz in the 1.8GHz band, 10MHz in the 2.1GHz band, and 10MHz + 20 MHz in the 2.6 GHz band.

Since June 2016, SK Telecom has been providing a 500Mbps LTE-A Pro service by applying 256 QAM technology to its tri-band LTE-A CA network. The company also acquired additional spectrum in the 2.6GHz band in May 2017, securing the basis for LTE-A five-band CA.

SK Telecom has also demonstrated the application of MIMO to its tri-band CA network, to provide 900Mbps data speeds. With the application of 4X4 MIMO to a 20MHz bandwidth of a frequency band, users are expected to be able to download data at a maximum rate of 400Mbps per frequency band.

SK Telecom and Samsung Electronics are demonstrating this LTE-A Pro technology at Samsung booth at MWC 2017, and plan to commercialize it within the first half of this year.

SK Telecom has also announced that, in partnership with Ericsson, it has demonstrated Licensed Assisted Access (LAA) technology. By aggregating 80MHz in licensed and unlicensed spectrum and applying 4X4 MIMO technology, peak data rates of 1Gbps is achievable, SK said. The two companies are demonstrating the technology at the Ericsson booth during MWC 2017.

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